GATA factors are characterised by the presence of conserved, type-IV zinc-finger motifs Animal factors typically contain two C-x2-Cx17-C-x2-C zinc-finger domains. The majority of known fungal GATA factors contain a single C-x2-C-x17-C-x2-C finger with greatest similarity to the carboxyl (C) terminal finger of animal GATA factors.Several examples of fungal GATA factors containing a variant C-x2-C-x18-C-x2-C DNA-binding domain are also known.

Examples of both C-x2-C-x17-Cx2-C (Type IVa) and C-x2-C-x18-C-x2-C (Type IVb) GATA factors are found within fungi; animals onlycontain the former configuration, and plants only the latter. Plant GATA factors typically contain a single zinc finger. The Arabidopsis type-IV zinc-finger proteins may represent the previously defined family of nuclear GATA-binding proteins implicated in light-responsive transcription.